Uncategorized
- Health & Medicine
Oral Exams
Scientists are taking advantage of the components in spit to develop new, saliva-based diagnostic tests.
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19590
Biologist Paul Denny indicates in this article that if the test of the saliva shows that the young patient is at high risk for developing cavities, then extra precautions could be taken such as sealants and fluoride treatments. As a practicing dentist, I wish to point out that both of those procedures are routine with […]
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I have spent the past 30 years as a geoscientist studying the history of Earth and take great exception to a statement in the article: “Scientists are divided on whether climate change, induced by industrial and automotive release of carbon dioxide and other greenhouse gases, is driving these statistics.” This sentence states that there would […]
- Earth
The Wind and the Fury
New research suggests that, as global warming proceeds, hurricane winds will gain speed and the storms will dump more rain, but controversy lingers as to how much more violent the storms will become and when they will occur.
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***Notice to Subscribers in Areas Affected by Hurricane Katrina***
The U.S. Postal Service has asked magazine publishers to suspend subscription mailings to areas that were damaged by Hurricane Katrina. Science News subscribers in those areas won't be charged for issues that are withheld, and their subscriptions will be extended. Mailings will resume upon notification by the USPS that delivery is reinstated.
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- Humans
From the September 7, 1935, issue
Lifelike museum exhibits, a vaccine against the common cold, and the functions of genes.
- Paleontology
Dinosaurs!
The Smithsonian Institution’s dinosaur Web site tells the story of the National Museum of Natural History’s collections, research, and staff. Visitors not only learn about the early history of these well-known dinosaur collections but also get a chance to participate in a virtual dinosaur discovery, click through an interactive “Tree of Life” highlighting milestones in […]
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19588
In this article the mirror image isn’t really a perfect match, is it? It doesn’t itself secrete anything. Also, could the mirror be made to slowly withdraw, thus pulling the fish image away from the real fish in a simulated retreat? Let’s see then if there are any victory-induced hormones released. W. Gregory StewartLos Angeles, […]
- Animals
Perfect Match: Tied contest gives fish no hormone rush
A male fish produces a burst of hormones as he fights off an intruder, but this surge isn't triggered simply by fighting.
- Tech
Electronics Gets Y’s: Nanotubes branch out as novel transistors
Y-shaped nanotubes might become a common component in ultrasmall electronic circuitry.
- Materials Science
Sun and Sand: Dirty silicon could supply solar power
Scientists have proposed a way to control the distribution of contaminants in silicon, potentially opening up the use of cheaper starting materials for making solar cells.
